Il Devoto-Oli dei Sinonimi e Contrari is a reference guide to help finding the right words. It aims to show the complex reality od the Italian language and direct users in the intricate maze of usage registers. Thanks to the attention given to affinities and differences between word meanings, the work favours a deep knowledge of the Italian lexicon, and stands both as a fundamental tool of language education, and as a lexicographic first-aid chest.